Tuning control mechanism



Aug. 7, 1945. W. T. mom: HAL 2,380,946

TUNING CONTROL MECHANISM Filed Oct. 7, 1941 2 Sheets-Sheet l I. I I v- 'H I FIG- 3 an 'I I. in. I I fin Z 24 24" I WILLIAIBI: @238'123 g 1 35 KENNETH SCHUSSMAN A I Aug. 7, 1945.

FIG. 4

W. T. COOKE ET AL TUNING CONTROL MECHANISM 2 Sheets-Sheet '2 Filed Oct. 7, 1941 INVENTORS WILLIAM T. COOKE KENNETH L.SCHUSSMAN Patented Aug. 7, 1945 TUNING coNrnor. MECHANISM William T. Cooke, Huntington, and Kenneth L. Schussman, Hempstead, N. Y., assignors to Sperry Gyroscope Company, Inc.,' Brooklyn, N. Y., a corporation of New York Applicationoctober 7, 1941, Serial No. 413,982 I Claims. (01. 250-2751 This invention relates to an improvement in tion for Letters Patent may be efiected.

Other features and advantages will become apparent from the specification when read in connection wtih the accompanying drawings, wherein Fig. 1 is a-longitudinal elevation view; partly in section, showing the tube structure with the improved tuning mechanism mounted thereon.

Fig. 1A is a fragmentary side elevation partly in section illustrating the resonator trimming control ofthe invention.

Fig. 2 is an end view of the tube structureshown in Fig. 1.

Fig. 3 is a detail cross section of a modified form of the tuning control mechanism illustrated in Fig. 1, and

Fig. 4 is a view similar to Fig. 1, also partly in section, illustrating a further modified form of the improved tuning mechanism by means of which individual resonators of the tube structure are controlled.

With particular reference to Figs. 1 and 2, showing the preferred form of the invention, the improved control mechanism is mounted on a high frequency tube structure of the type dis closed in the heretofore identified application for Letters Patent: In the present instance, how-' ever, the detector construction shown in the lefthand end of the tube structure in the noted application has been omitted. This conventional tube structure includes adjoining resonatornism include a flange element 6 which is centrally located with respect to the resonator chambers l and 2 and surrounds the same. On the oathode end of the tube is situated a similar flange element designatedat l and located in parallel relation to flange 6. Also, on the opposite end of the tube and situated in similar relationship is a further flange designated at 5. Flanges 5 and I are preferably positioned at the same spaced distance along the tube from the centrally located fixed flange 6. The improved control mechanism is mounted on the tube by means of the respectively noted flanges which extend from the body of the evacuated tube structure. Abutting clamp rings l3 and I 4 which fit over flanges 5 and l are of similar construction and are held in position thereon in both instances by suitable -means, such as a number of screw fastening connections for the parts as designated at H. The clamped rings I3 and 14 on both flanges 5 and I having threaded openings therein which are adapted to receive adjustable screw elements I5 to '20 inclusive. Screw elements l5, l6, I! are employed with the clamping rings mounted on flange 5 and elements I 8 l9 and 20 are used on the similar clamping rings fixed to flange I. The respective screw elements being three in number for each of the clamped rings are-arranged at spaced'intervals around the periphery of the respective rings as clearly illustrated in the case of screw elements I8, I 9 and 20 in 21.

The ends of the respective adjusting screw elements 15 to 20 disposed towards the central flange 6 are shaped to provide a mounting for jacks or connecting thrust pieces, only four of which are illustrated in the drawing, the same being designated at 8, 9, l0 and H. 'In Fig. 1, the associated parts include jack 8-screw l6, jack 9-screw l9, jack IO-screw l5 and jack 11- screw.l8. The respective adjusting screws 15 to 20 inclusive provide thrust bearings for the jacks or connections therewith and serve to provide a way in which an initial rough adjustment of the tuning of the resonators of the high frequency tube structure may be facilitated as particularly shown and described in Hausen et al. Patent No. 2,311,658, issued February 23, 1943. This portion of the improved mechanism provides the thrust structure by which the deflection of the flexible walls of the tube is effected.

After rough tuning of the device is accomplished by manual setting of the screws [5 to 20, inclusive, permanent gang tuning is provided by the presently described mechanism which controls only one pair of the three oppositely spaced pairs of tuning jacks and their respective conp 'yed.- as illustrated in Fig.

necting screws. In the instant case, the oppositely disposed pair of jacks 8 and 9 are controlled by the mechanism in effecting gang tuning of the tube as shown in Fig. 1. It will be understood that the tuning is effected by joint movement of I 1 thereby being simultaneously urged in corre-' spending directions to exert the desired control over the flexible diaphragms or walls 3 and 4 of the tube.

The central clamping ring construction is shown by parts 29 and 30, part 29 corresponding in form to the previously designated ring elements l3 for flanges 5 and I and part 30 corresponding to the respective similar rings shown at .l4. The rings are also similarly connected and mounted in position on the centrally disposed fixed flange 6. As shown in Fig. 1, a screw member 3| is situated on the ring clamps 30 and 29 and located between the respective fixed position jacks I0 and II. The housing construction for the tuner control mechanism, in this instance, is provided on the clamp ring 29 and is shown in the form of two hollow tubular casing members extending tangentially from the ring as designated at 32 and 32', the same also preferably being situated in parallel relation to one another. A suitably fixed centrally positioned wall 2| is located within each of the casing interiors, the wall terminating in an extended screw threaded portion designated at 22. A longitudinally movable knob 24 is rotatably mounted on the screw threaded extension 22 and includes an interiorly disposed tapered or conical body piece 23. In'the embodiment of the invention shown in Fig. l, oppositely situated lever arms 25 and 26 are pivoted'within the casing 32 as designated at 33. A portion and.

preferably the opposite end of the respective arms 25 and 26 engages the tapering or conical wedgeshaped surface of the knob body piece 23. Openings are provided in the tubular casing 32 through which the jacks 8 and 9 slidably extend, the ends of the jacks being located in seat forming portions provided on the surface of the respective levers 25 and 25. By rotating the knob 24 of the gang tuner in a desired direction the position of the conical body 23 is varied which eifects'simultaneous movement of the lever arms 25 and 6 and thus influences and positions the respective movable jacks 8 and 9 to controlthe setting of the flexible diaphragms 3 and 4 as previously described. By distorting flexible diaphragms 3 and 4, the distance between the resonator grids contained within the respective chambers and 2 is altered thusichanging the resonant frequencies of he same as particularly disclosed in the second aforementioned application for Letters Patent. It will be understood that for gang tuning both resonators are controlled in thesame frequency change sense by means of knob 24.

For trimming 0r matching the frequencies of the respective resonators, the knob 24' is em- 1A. The construction of the control mechanism actuated by knob 24' is similar to that heretofore described except for the fact that only one lever 26 is used and consequently only one of the associated movablejacks 9 with the same. This control mechanism a 49 similar to adjustable along screw In this instance, the screw a portion of the movable parts on which grid 46 piece 42, take the is further adapted to usually exert its influence upon the buncher resonator of the tube structure. In this arrangement jack 8 opposite the one whose position is determined by the matching control mechanism may bear directly against the side surface of the internally located central wall A mounting flange casing structure with a suitable connecting piece the tube structure may be fixed in position on an apertured plate 36.

Fig. 3 shows a modification of the construction illustrated in Fig. 1 in which cantilevers 40 and 4|, the ends of which are mounted in a fixed base as may be situated on the lever arms 25 and 26. The opposite ends of the cantilever arms 40 and 4| are positioned against the body of thewedge piece 23 on the knob 24 and the same is further constructed to cooperate with jacks 8 and 9 as heretofore described.-

A further modified form of the invention is shown in Fig. 4, in which a separate tuner or improved control mechanism is employed with each of the resonator chambers of the tube. In this construction, the resonant frequency of the tube structure in chamber 2 is altered by changing the distance between the grids 45 and 41 through means of manual adjustment of a turnable knob 48. The internally screw threaded knob 48 is provided with a tapering or. wedge body surface the illustrated form of the invention shown in Fig. 1, the tapered surface however; in this instance, sloping toward the knob 48 instead of in the opposite direction. Knob 48 is longitudinally piece 50 which is suitably mounted in a fixed position .on the grid supporting tube 60 extending from diaphragm 45. A lever arm 5| is pivotally mounted at 52 on a supporting plate 53, fixed at one end of the same through means of which cooperation with the tapered thrust surface 49 is obtained. An extending arm 55 of the lever 5| engages the face of an annular ring or thrust member. which is positioned tightly against the central portion of plate 53 on the screw 50. Consequently, the position of grid 46 with respect to grid 41 is controlled by th manual setting of knob 48, the outward movement bein imparted to grid 46 by means of lever arm 5| and thrust member 58 which is axially movable with the central portion of plate 53 and diaphragm 45 as one piece, the inward movement of grid 45 being augmented by the natural resilience of the diaphragm 45 and the pressure of the atmosphere thereon. element 50 also forms is mounted as the same is fixed thereto in a suitable manner. I

As many changes could be made'in the above construction and many apparently widely different embodiments of the invention could be made without departing from the scope thereof. itis intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

- What is claimed is:

1. A tuning control mechanism connected to a high frequency tube structure having a cavity re.

v sonator with rigid and flexible wall portions, comprising a longitudinally movable tapered member, a lever having a portion engaging the tapered 32 and 32' by means of which place of the pivotally mountedv that described in connection with to the outer rigid wall of chamber '2; includes a roller bearing member 54 member, and a thrust member interposed between the lever and the flexible wall whereby the deflection of the flexible wall is controlled by the longitudinal movement of said tapered member.

2. A mechanism as in claim 1, wherein said lever is pivotally connected to said rigid wall portion.

3. A mechanism as in claim 1, wherein said lever has one end flxedlyconnected to said rigid wall portion, whereby said lever serves as a cantilever.

4. A tuning control mechanism for a high frequency tube structure having a cavity resonator with a fixed wall portion and a movable wall portion, said mechanism comprising a support adapted to be fixed to one of said wall portions, a tapered member mounted onsaid support for longitudinal movement, a pivoted lever having a portion engaging said tapered member, and a thrust member adapted to be interposed between said lever and the other of said wall portions, whereby relative movement between said wall portions may be controlled by the longitudinal movement of said tapered member.

5. A tuning control mechanism connected to a high frequency tube structure having a cavity resonator with rigid and flexible wall portions, comprising a rotatably mounted member having a conically shaped portion thereon longitudinally movable on rotation of the member, a lever having one end of the same contacting to the conically shaped portion of the rotatable member, and a thrust connection between said lever and flexible wall whereby deflection of the flexible wall is effected by the turning of said member,

6. A tuning control mechanism connected to a high frequency tube structure having cavity resonators with rigid and a plurality of flexible wall portions, comprising a rotatably mounted member having a conically shaped portion thereon longitudinally movable on rotation of the member, a plurality of levers each of which has a portion contacting the peripheral surface of the conically shaped portionof the rotatable member, and a thrust connection between each of said levers and.

one of the flexible walls of the tube whereby deflection of said flexible wall is effected by the turnin of said member.

'7. A tuning control mechanism connected to a high frequency tube structure having a cavity resonater with rigid and flexible wall portions, comprising a longitudinally movable tapered member, a pivotally mounted lever havin a free portion engaging the tapered member, and a thrust member interposed between the lever and the flexible wall whereby the deflection of the flexible wall is controlled by the longitudinal movement of said tapered member.

8. A tuning control mechanism connected to a high frequency tube structure having a cavity resonator with rigid and flexible wall portions, comprising a longitudinally movable tapered member, a cantilever having one of its ends engaging the tapered member, and a thrust connection between said cantilever and flexible wall whereby deflection of the flexible wall is effected by the movement of said member.

9. A tuning control mechanism connected to a high frequency tube structure having a cavity resonator with rigid and flexible wall portions, comprising a rotatably mounted member having a conically shaped portion thereon longitudinally movable on rotation of the member, a pivotally mounted lever having a portion contacting the peripheral surface of the conically shaped portion of the rotatably mounted member, and a thrust ring between the flexible wall and the lever whereby deflection of the flexible wall is effected by the turning of said member.

10. Atuning control mechanism connected to a high frequency tube structure having a cavity resonator with a flexible wall portion, comprising a longitudinally movable tapered member, lever means actuated by said tapered member, and force transmitting means interposed between the lever means and the flexible wall portion of the cavity resonator whereby deflection of the flexible wall is controlled by the longitudinal movement of said tapered member.

- 11. A tuning control mechanism connected to a high frequency tube structure having a cavity resonator with a flexible wall portion, comprising a longitudinally movalble tapered member, a can tilever actuated by said tapered member, and force transmitting means interposed between the cantilever and the flexible wall portion of the cavity resonator whereby deflection of the flexible wall is controlled by the longitudinal movement of said tapered member.

12. A tuning control mechanism connected to a high frequency tube structure having a cavity resonator with a movable wall portion, comprising a movable tapered member, a second member actuated bythe taper of said tapered member upon motion of said tapered member, and force trans mitting means interposed between said second member and said movable wall portion whereby the deflection of said movable wall is controlled by the movement of said tapered member.

13. A tuning control mechanism connected to a high frequency tube structure having a cavity res: onator with a flexible wall portion, comprising a movable tapered member, a cantilever actuated by said tapered member, and force transmitting means interposed between said cantilever and said flexible wall portion whereby deflection of said flexible wall is controlled by the movement of said tapered member.

14. A tuning control mechanism connected to a high frequency tube structure having a cavity resonator with a flexible wall portion, comprising a movable tapered member, a second member actuated by said tapered member, and force transmitting means interposed between said second member and said flexible wall portion whereby deflection of said flexible wall is controlled by the movement of said tapered member.

15. Ultra high frequency apparatus comprising means defining a cavity resonator, spaced electrodes mounted in said resonator for relative sepa'rational tuning adjustment of said resonator, members rigid with each of said electrodes, a, lever pivotally connected to one of said members and operably connected to the other of said members, a longitudinally shii'table device having a, cam surface engaging said lever, and means for 1ongitudinally displacing said. device for controllably tuning said resonator.

16. Ultra high frequency apparatus comprising means defining a pair of cavity resonators, support means adjacent said resonators, shiftable tuning members connected to the respective resonators, a pair of cantilevers fixed at one end to said suport means, force transmitting means engaged between each lever and a corresponding said support means, force transmitting means engaging both of said levers for gang tuning said resonators.

17. Ultra high frequency apparatus comprising means defining a pair of cavity resonators, support means adjacent said resonators, shiftable tuning members connected to the respective resonators; a pair of levers mounted on said support means, force transmitting means engaged between each lever and a corresponding tuning member, and a shiftable cam member engaging both said levers for gang tuning said resonators.

18. Apparatus as in claim l7, wherein said levers pivoted to said support means.

19. Apparatus as in claim 17 wherein said levers are cantilevers fixed at one end to said support means.

20. Apparatus as in claim 1'7, wherein said tuning members have means for adjusting the same, whereby individual tuning of said resonators may be effected independently of said gang tuning.

21. Ultra high frequency apparatus comprising means defining a cavity resonator, a shiftable. tuning member engaging said resonator, a tuning control member displaceable substantially longitudinally of the resonator axis, and motion transmitting means interconnecting said members comprising a cam surface on said control member and a lever engaging said cam surface and extending between said cam surface and said tuning member.

22. Ultra high frequency apparatus comprising means defining a cavity resonator having a rigid wall portion and a movable wall portion, a shiftable tuning member engaging said movable wall portion, a shiftable cam member, a lever engaged by said cam member and pivoted on said rigid wall portion, and a motion transmitting connection between said lever and said tuning member.

23. Ultra high frequency apparatus embodying means defining a. hollow resonator having a pair of spaced electrodes mounted for separational tuning adjustment, a tuning member rigid with one of said electrodes, a lever pivotally connected to the other of said electrodes and operably connected to said tuning member, and tuning control means comprising a shiftable cam engaging said lever.

24. High frequency apparatus comprising a hollow resonator having a wall portion movable in a predetermined direction and means for tuning said resonator comprising a movable tuning control member supported in said apparatus, means providing a cam surface on said member, and force transmitting means interposed between said surface and said wall portion.

25. High frequency apparatus comprising a hollow resonator having a wall portion movable in a predetermined direction and means for tuning said resonator comprising a tuning control member supported for motion in a direction substantially parallel to. said predetermined direction and having. a cam surface with portions at differing distances from said wall portion, and force transmitting means engaging said surface and said wall portion.

WILLIAM T; COOKE. KENNETH L. SCHUSSMAN.

- pat nt No. 2,3,8 ,9 L6.

CERTIFICATE OF CORRECTION.

' st 7, 9 m WILLIAM T. COOKE, ET AL.

- It is hereby certified that error appears in the printed Specification of the above numbered patent requiring correction as follows: Page 1, second column, line 14.5, for "Hansen" read Hansen-; page 5, first column, line 29 claim 5, after the word "contacting" strike out "to"; and second 7 column, line 69, claim 16, forv "said support means, force transmitting means" read -turning member, and a shiftable c am member--; line 67, same "claim, for "suport" read support-; page 14,, first column, :line 7, claim 18, before "pivoted" insert are-; and that the said letters Patent should be read with this oorr otion therein that the same may conform to the record of the case in the 1 Patent Office.

Signed and. sealed. this 18th day of December, A. D. 19Lu5.-

Leslie Frazer (Seal) First Assistant Commissioner of Patents. 

